poolmanager: Comply with new configuration policy

New properties

poolmanager.cell.name
poolmanager.plugins.selection-unit
poolmanager.plugins.thread-pool
poolmanager.plugins.quota-manager
poolmanager.service.broadcast
poolmanager.service.pnfsmanager
poolmanager.service.billing
poolmanager.service.pool.timeout
poolmanager.service.pool.timeout.unit
poolmanager.authz.staging
poolmanager.authz.staging.pep

Deprecated

selectionUnit
threadPool
quotaManager
poolStatusRelay

Target: trunk
Require-notes: yes
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/5703/